Feronika, I., Y. Yusmini, and J. Yusri. “Farm Household Income Analysis of Integrated Cow Oil Palm System (SISKA) Semi Intensive Pattern In Pangkalan Lesung Sub-District Pelalawan District”. Journal of Agribusiness and Community Empowerment (JACE), vol. 3, no. 1, Mar. 2020, pp. 1-15, doi:10.32530/jace.v3i1.80.